BMW M2, M3 & M4 Carbon Fiber OE Part Number Guide: G87, G80 & G82

BMW M2, M3 & M4 Carbon Fiber OE Part Number Guide: Factory Carbon vs M Performance Parts

For automotive aftermarket distributors, performance shops and carbon fiber parts suppliers, a BMW OE part number can be one of the fastest ways to identify the component a buyer is trying to replace.

But there is an important complication: not every BMW carbon fiber part belongs to the same parts system.

For the current BMW M2 G87, M3 G80 and M4 G82 generations, buyers may encounter standard BMW exterior parts, factory carbon fiber components associated with the M Carbon Exterior Package (S71CA), and separate BMW M Performance carbon fiber accessories.

These numbers should not be treated as interchangeable.

This guide provides a practical BMW carbon fiber OE reference for professional aftermarket buyers and explains how to use those numbers when sourcing aftermarket dry carbon fiber replacement parts.

Important: OE numbers in this guide are identification references. BMW can revise part numbers according to production date, LCI update, market and vehicle configuration. Always verify the VIN and exact vehicle configuration before ordering a replacement part.

Can BMW OE Part Numbers Be Used to Find Carbon Fiber Replacement Parts?

Yes. BMW OE part numbers are useful references for identifying the location, specification and factory version of a component, but an OE number alone should not be treated as a complete fitment guarantee.

For a professional buyer, searching only for “BMW M3 carbon fiber parts” can produce hundreds of products with different designs and fitments.

Searching for a specific reference such as:

BMW 51118074773 carbon fiber

is much more precise.

An OE number can help a distributor, body shop or performance shop determine:

• which component is being discussed;

• whether it is a left, right or center part;

• whether the vehicle originally uses a standard or carbon version;

• whether a carbon component belongs to a factory option package;

• whether an aftermarket component is intended to replace or reference that OE design.

This is particularly useful when a buyer sends a photo but does not know the correct English product name.

However, OE matching should still be combined with the chassis code, VIN, production date and vehicle configuration.

Understanding BMW Standard OE, Factory Carbon and M Performance Parts

Before comparing BMW M2, M3 and M4 carbon fiber part numbers, professional buyers should understand three different categories.

1. Standard BMW OE Parts

These are the regular components installed according to the vehicle specification.

For example, on a G80 M3 without the M exterior carbon package, the rear lower bumper trim can be listed as a gloss-black component.

A vehicle equipped with the carbon exterior option may use a different CFK component in the corresponding location.

This creates a useful standard OE → factory carbon OE relationship for aftermarket sourcing.

2. Factory Carbon Fiber Parts — S71CA

BMW parts catalogs use S71CA for the M exterior carbon package.

For certain G80 M3 and G82 M4 exterior components, the catalog clearly distinguishes between:

S71CA = No

and

S71CA = Yes

The carbon version may also be identified as CFK, the German abbreviation associated with carbon-fiber-reinforced plastic.

For aftermarket buyers, these factory carbon OE numbers are particularly useful because they can identify an OEM carbon specification rather than simply a generic carbon styling upgrade.

3. BMW M Performance Carbon Fiber Parts

BMW M Performance carbon fiber parts are a separate category.

They are genuine BMW accessories or retrofit components, but that does not mean they are the same as the carbon components installed through the S71CA factory option.

This distinction is especially important for the BMW M2 G87, where many commonly searched exterior carbon components are M Performance accessories.

Factory carbon option ≠ M Performance accessory.

When sourcing an aftermarket dry carbon fiber replacement, buyers should first determine which type of component they are trying to match.

BMW M2 G87 Carbon Fiber Part Numbers

For the BMW M2 G87, many of the most recognizable exterior carbon components are found in the BMW M Performance accessory system, rather than as simple standard-OE-to-S71CA carbon substitutions.

That changes how a professional buyer should use the part number.

Instead of assuming that a carbon number represents the factory carbon version of a standard plastic component, treat these numbers as M Performance references unless the vehicle-specific catalog confirms otherwise.

BMW G87 M2 M Performance Carbon References

What Should G87 M2 Buyers Pay Attention To?

The key issue is configuration.

For example, a rear diffuser designed around a particular exhaust configuration should not be assumed to fit every G87 M2 rear setup simply because the chassis code is correct.

BMW itself recommends VIN verification for vehicle-specific parts.

For aftermarket distributors and performance shops, a safer sourcing inquiry therefore looks like:

BMW M2 G87 + OE/M Performance reference + VIN + production year + original-part photos + exhaust configuration.

That information is much more reliable than simply requesting a “G87 M2 carbon diffuser.”

BMW M3 G80 / G80 LCI Carbon Fiber OE Part Numbers

The BMW M3 G80 provides several clearer examples of standard BMW OE parts and corresponding factory carbon components under S71CA.

These pairs are particularly valuable for aftermarket carbon fiber sourcing because buyers can identify both the standard component and its factory carbon counterpart.

BMW G80 M3 Standard OE vs Factory Carbon OE

*Mirror-cap references can vary with production revision and LCI specification. VIN verification is strongly recommended.

Example: G80 M3 Front Air Intake Carbon Parts

A useful OE-reference relationship is:

Standard left: 51118069439
Factory carbon left: 51118074773

and:

Standard right: 51118069440
Factory carbon right: 51118074774

For vehicles equipped with S71CA, BMW catalogs identify 51118074773 and 51118074774 as CFK air-inlet frames.

This makes searches such as:

• 51118074773 carbon fiber replacement

• 51118074774 carbon fiber replacement

• BMW G80 carbon air inlet frame

• G80 M3 S71CA carbon parts

particularly relevant for aftermarket sourcing.

Example: G80 M3 Rear Lower Bumper Carbon Trim

Another clear relationship is:

Standard gloss-black OE: 51128085093
Factory CFK OE: 51128075031

This is a useful distinction because “BMW M3 carbon diffuser” is often used loosely in the aftermarket.

For accurate B2B sourcing, identifying 51128075031 tells the supplier much more about which factory-style lower rear component the buyer is referencing.

Example: G80 M3 Factory Carbon Rear Spoiler

For the G80 M3:

Standard / primed rear spoiler: 51628086360
Factory CFK rear spoiler: 51628086380

Again, this is a genuine S71CA standard-versus-carbon relationship, not simply an aftermarket styling description.

What About M Performance Parts for the G80 M3?

The G80 also has BMW M Performance carbon components.

For example, 51192475168 is associated with the M Performance carbon front attachment.

This should be categorized separately from the S71CA carbon air-inlet frames.

A buyer searching for a G80 M3 carbon front lip may therefore be referring to an M Performance-style front attachment rather than a factory S71CA air-inlet component.

That is exactly why the OE or accessory reference should be requested before quotation.

BMW M4 G82 / G82 LCI Carbon Fiber OE Part Numbers

The BMW M4 G82 shares several carbon fiber OE references with the G80 M3, but not every corresponding standard part is identical.

For wholesalers and aftermarket suppliers, this is important: shared carbon OE numbers do not mean every surrounding bumper or trim component is interchangeable.

BMW G82 M4 Standard OE vs Factory Carbon OE

*Part-number revisions can occur according to production date and specification. Confirm the VIN before final fitment approval.

G80 M3 and G82 M4 Can Share Carbon OE Numbers

One particularly useful example for B2B buyers is 51128075031.

This factory CFK rear lower bumper trim appears in both the G80 M3 and G82 M4 parts systems.

However, the corresponding non-carbon parts differ:

G80 M3 standard gloss-black: 51128085093

G82 M4 standard gloss-black: 51128085174

Both can correspond to the factory carbon component:

51128075031

This is exactly why an OE database should contain more than a simple “product number = vehicle” relationship.

For a professional aftermarket supplier, the database should ideally connect:

Model → Chassis → Position → Standard OE → Carbon OE → Factory Option → Production Revision

G82 M4 Factory Carbon Rear Spoiler

The G82 M4 provides another clear S71CA example:

Standard M rear spoiler: 51628086382
Factory CFK rear spoiler: 51628086384

This differs from the G80 M3 rear spoiler numbers, even though the two vehicles share several other carbon exterior components.

For an aftermarket carbon fiber manufacturer or distributor, treating “G80/G82 carbon spoiler” as one generic product without verifying the actual design and OE reference can therefore create fitment problems.

Factory Carbon vs M Performance Carbon: What Is the Difference?

Factory S71CA carbon parts are vehicle components specified through BMW’s M exterior carbon package, while M Performance carbon parts are accessories or retrofit components offered through the M Performance parts system.

Both may be genuine BMW carbon fiber components, but their catalog role and fitment relationship are different.

This distinction matters commercially.

A body shop replacing a damaged factory S71CA component has a different sourcing requirement from a tuning shop looking to upgrade a standard vehicle with an M Performance-style carbon front attachment.

If both inquiries are simply described as “BMW carbon fiber parts,” the risk of supplying the wrong component increases.

How to Verify the Correct Carbon Fiber Replacement Part

The safest B2B fitment process combines the OE number with the VIN, chassis, production information and photos of the original component.

Before ordering BMW carbon fiber replacement parts, buyers should provide:

1. BMW model — M2, M3 or M4

2. Chassis code — for example G87, G80 or G82

3. Model year and production date

4. VIN

5. Part position — left, right or center

6. Original OE part number, if available

7. Factory option information, especially S71CA where relevant

8. Front or rear bumper configuration

9. Exhaust configuration, particularly for rear diffusers

10. Clear photos of the original component and vehicle

Why Isn’t the OE Number Alone Enough?

BMW parts can change across production revisions, LCI updates and regional specifications.

The same model name can also include multiple bumper, exhaust and equipment configurations.

An OE number is therefore an excellent identification reference, but it should be treated as part of the fitment verification process rather than as the only criterion.

This is particularly important for distributors ordering inventory in volume. A fitment mistake affecting one retail order is inconvenient; the same mistake across dozens or hundreds of B2B units can become expensive.

How B2B Buyers Can Use OE Numbers When Sourcing Aftermarket Dry Carbon Parts

For distributors and tuning businesses, OE-reference sourcing can make communication with a carbon fiber manufacturer much more efficient.

Instead of sending:

“We need BMW M4 carbon parts.”

a professional inquiry can specify:

“We are looking for an aftermarket dry carbon fiber replacement referencing BMW OE 51128075031 for G80/G82 applications. Please confirm available fitment, construction, finish and wholesale MOQ.”

That immediately gives the manufacturer a defined component to check.

For pre-preg dry carbon fiber parts, additional details should also be confirmed, including:

• carbon weave pattern;

• gloss or matte finish;

• mounting points;

• OEM-style dimensions;

• hardware requirements;

• installation method;

• packaging requirements;

• private-label requirements;

• expected order quantity.

For wholesalers and online automotive parts sellers, this information can also improve the quality of downstream product listings.

A product title such as:

Dry Carbon Fiber Rear Lower Bumper Trim for BMW M3 G80 / M4 G82 — OE Reference 51128075031

is substantially more informative than:

BMW M3 M4 Carbon Diffuser

provided that the aftermarket component has actually been verified against that OE reference.

Why OE-Reference Data Matters for Automotive Aftermarket Distributors

OE-reference data does more than help identify a product.

For a distributor managing hundreds of SKUs, it can support:

• product catalog organization;

• fitment database development;

• customer-service searches;

• replacement-part identification;

• wholesale quotation requests;

• inventory planning;

• e-commerce product data;

• communication between supplier and buyer.

It also reduces dependence on inconsistent product naming.

One supplier may call 51128075031 a “rear diffuser,” another may call it a “rear lower bumper trim,” while an OE catalog describes it more specifically as a lower rear bumper trim panel.

The part number creates a common reference point.

This is one reason professional B2B carbon fiber sourcing should increasingly combine vehicle fitment data + OE references + visual verification.

Frequently Asked Questions

Can I find BMW carbon fiber parts using an OE number?

Yes. An OE number is one of the most useful references for identifying a specific BMW component and searching for a compatible aftermarket carbon fiber replacement. However, the chassis, VIN, production date and vehicle configuration should also be checked before ordering.

What is BMW option code S71CA?

S71CA identifies the M exterior carbon package in BMW parts catalogs. For applicable vehicles, the catalog may list different components depending on whether S71CA is present. Carbon versions are often identified as CFK.

Are BMW M Performance carbon parts the same as factory carbon parts?

No. BMW M Performance carbon components are accessories or retrofit products and should not automatically be treated as S71CA factory carbon components. Both can be genuine BMW products, but they belong to different fitment and catalog categories.

Do BMW G80 M3 and G82 M4 share carbon fiber part numbers?

Yes, some components are shared. For example, factory CFK rear lower bumper trim 51128075031 appears in both G80 M3 and G82 M4 applications. The corresponding standard non-carbon component can nevertheless differ between the two models, so full fitment verification is still necessary.

Is an OE number enough to guarantee fitment?

No. OE numbers are valuable identification references, but BMW parts can vary according to production date, LCI revision, regional specification and vehicle options. VIN verification and original-part photos are recommended before confirming an order.

What information should B2B buyers provide when sourcing a carbon fiber replacement?

At minimum, provide the BMW model, chassis code, production year/date, VIN, OE number, installation position, factory options, photos and required quantity. For rear aerodynamic components, provide the exhaust configuration when relevant.

Source BMW Carbon Fiber Replacement Parts by OE Reference

For distributors, performance shops, carbon fiber wholesalers, automotive brands and online sellers, accurate fitment starts with accurate product identification.

We manufacture pre-preg dry carbon fiber automotive parts for B2B supply, including OEM-style replacement components and carbon fiber exterior upgrades for performance vehicles.

For sourcing inquiries, an OE reference gives our team a much better starting point for checking the required component, fitment and product specification.

Looking for an aftermarket dry carbon fiber replacement for a specific BMW OE number?

Send us:

OE part number + BMW model/chassis + VIN or production information + original-part photos + required quantity.

We can use this information to evaluate the requested application and prepare a B2B quotation for wholesale, distribution, private-label or OEM cooperation.

Important: OE numbers referenced in this guide are used for product identification and fitment research. Aftermarket carbon fiber products supplied by us are not represented as Genuine BMW parts. BMW and associated model names are trademarks of their respective owner.